Cancer is thought to arise through the accumulation of genomic aberrations evolving under Darwinian selection. However, it remains unclear when the aberrations associated with metastasis emerge during tumor evolution. Uveal melanoma (UM) is the most common primary eye cancer and frequently leads to metastatic death, which is strongly linked to BAP1 mutations. Accordingly, UM is ideally suited for studying the clonal evolution of metastatic competence. Here we analyze sequencing data from 151 primary UM samples using a customized bioinformatic pipeline, to improve detection of BAP1 mutations and infer the clonal relationships among genomic aberrations. Strikingly, we find BAP1 mutations and other canonical genomic aberrations usually arise in an early punctuated burst, followed by neutral evolution extending to the time of clinical detection. This implies that the metastatic proclivity of UM is “set in stone” early in tumor evolution and may explain why advances in primary treatment have not improved survival. Uveal melanoma (UM), the most common primary eye cancer, is strongly linked to mutations in the tumor suppressor BAP1. Here, the authors analyze 151 primary UM samples to find that BAP1 and other canonical genomic aberrations arise in an early punctuated burst followed by neutral tumor evolution.
Punctuated evolution of canonical genomic aberrations in uveal melanoma
Matthew G. Field,Michael A. Durante,H. Anbunathan,Louie Z. Cai,Christina L. Decatur,A. Bowcock,Stefan Kurtenbach,J. Harbour
Published 2018 in Nature Communications
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- Publication year
2018
- Venue
Nature Communications
- Publication date
2018-01-09
- Fields of study
Biology, Medicine
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
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